The terror attacks in Mumbai showed the complexity of the anti-terror situation in India and should sound alarms for both China and the international community at large, analysts have said.

"The scale and sophistication of the attacks are unprecedented. The militants have resorted to all means to cause the maximum casualties among the civilians," Li Wei, director of the anti-terrorism research center at the China Institute of Contemporary International Relations, said on Friday.

They also seized scores of hostages, especially those from Britain and the US, he said.